https://techcrunch.com/2018/06/28/tesla-opens-model-3-reservations/

Tesla has opened the Model 3 waitlist floodgates, inviting all reservation holders in the U.S. and Canada to order the electric sedan that’s inextricably tied to its survival.

As of Thursday, existing reservation holders in the United States and Canada can log onto the Tesla website and complete their order in the company’s online design studio. Emails are gradually rolling out to reservation holders.